AMD Ryzen 7 5800 vs Intel Core i5-12600K Comparison

The Intel Core i5-12600K and AMD Ryzen 7 5800 are two desktop processors from different architectural generations, yet they land in a remarkably close overall performance tier. The data shows the Intel part wins 17 of 23 head-to-head benchmark comparisons, while the AMD chip takes 6. Despite this, their average benchmark scores are nearly identical—27,578 for the i5-12600K versus 27,535 for the Ryzen 7 5800, a delta of just 0.2 percent. Both processors sit at the 79th percentile among all CPUs, indicating that despite their different designs, they deliver comparable aggregate performance. The i5-12600K achieves its results with a hybrid core layout and a higher thermal envelope, while the Ryzen 7 5800 counters with a monolithic 7 nm design and superior single-core Cinebench scores. The choice between them hinges on workload-specific strengths rather than overall capability.

FAQ

Q: Which processor has the higher average benchmark score?

A: The Intel Core i5-12600K has an average benchmark score of 27,578, while the AMD Ryzen 7 5800 scores 27,535. The difference is only 0.2 percent, making them statistically equivalent in aggregate performance.

Q: How many head-to-head benchmark comparisons does each processor win?

A: The Intel Core i5-12600K wins 17 of the 23 head-to-head comparisons, while the AMD Ryzen 7 5800 wins 6. This gives Intel a decisive majority in direct matchup wins.

Q: Where does the Ryzen 7 5800 show its biggest advantage?

A: The Ryzen 7 5800’s largest win is in Cinebench R23 single-core, where it scores 3,099 versus Intel’s 1,907, a 38.5 percent advantage. It also leads in Cinebench R23 multi-core by 20.3 percent, scoring 21,953 versus 17,491.

Q: What is the biggest margin of victory for the Intel Core i5-12600K?

A: The Intel chip’s largest margin is in PassMark physics, where it scores 1,525 against the Ryzen’s 1,141, a 33.7 percent lead. It also dominates PassMark floating-point math by 30.3 percent.

Q: Do both processors support the same memory types?

A: No. The Intel Core i5-12600K supports both DDR4 and DDR5 memory, while the AMD Ryzen 7 5800 supports only DDR4. Both use a dual-channel memory bus.

Q: Which processor has a higher boost clock?

A: The Intel Core i5-12600K has a boost clock of 4.90 GHz, compared to 4.60 GHz for the AMD Ryzen 7 5800. Intel’s base clock is also higher at 3.70 GHz versus 3.40 GHz.

Architecture Differences

The architectural gap between these two CPUs is substantial. The Intel Core i5-12600K is built on Alder Lake-S architecture using Intel’s 10 nm process, fabricated in-house. It features a hybrid design with 10 cores and 16 threads, combining performance and efficiency cores to balance workload distribution. The die size is 215 mm², and it uses an Intel Socket 1700 interface. In contrast, the AMD Ryzen 7 5800 is based on Zen 3 architecture (codename Vermeer), manufactured on TSMC’s 7 nm process. It has 8 cores and 16 threads in a monolithic layout, with a much smaller die size of 74 mm² and 4,150 million transistors. The AMD chip uses the AM4 socket.

Cache configurations differ notably. The Intel i5-12600K provides 80 KB of L1 cache per core, 1.25 MB of L2 per core, and 20 MB of shared L3 cache. The Ryzen 7 5800 offers 64 KB L1 per core, 512 KB L2 per core, and a larger 32 MB shared L3 cache. This larger L3 cache on the AMD part can benefit certain data-heavy workloads. The Intel processor includes integrated graphics in the form of UHD Graphics 770, while the Ryzen 7 5800 has no integrated GPU, requiring a discrete graphics card. Both processors have unlocked multipliers for overclocking and support PCIe Gen 4 with 20 CPU lanes.

The process node difference is significant: Intel’s 10 nm versus TSMC’s 7 nm. This contributes to the Ryzen 7 5800’s lower 65 W TDP compared to Intel’s 125 W TDP. The AMD chip also supports ECC memory, a feature absent on the Intel part. Memory bandwidth for the Ryzen 7 5800 is listed at 51.2 GB/s, while no specific bandwidth figure is provided for the Intel chip. The i5-12600K was released later, on 2021-11-03, versus the Ryzen 7 5800’s release on 2021-01-11, giving AMD a roughly ten-month head start in the market.

Head-to-Head Benchmarks

The benchmark results reveal a split personality between these two CPUs. Intel’s i5-12600K dominates the 3DMark suite across all thread counts. In 3DMark 16-thread, Intel scores 7,975 against AMD’s 7,181, an 11.1 percent lead. The gap persists in 2-thread (1,989 vs 1,795, 10.8 percent), 4-thread (3,794 vs 3,443, 10.2 percent), and 8-thread (6,144 vs 5,692, 7.9 percent). Intel also wins 3DMark max-threads by 11.6 percent (7,966 vs 7,138) and single-thread by 10.9 percent (1,016 vs 916).

Cinebench results are more mixed. In Cinebench R15 multi-core, Intel wins decisively with 2,555 versus 2,212, a 15.5 percent margin. However, AMD takes Cinebench R15 single-core with 312 versus 275, an 11.9 percent lead for the Ryzen. Cinebench R20 sees Intel ahead in both multi-core (9,821 vs 9,220, 6.5 percent) and single-core (1,386 vs 1,301, 6.5 percent). The tables turn dramatically in Cinebench R23, where AMD wins multi-core by 20.3 percent (21,953 vs 17,491) and single-core by a massive 38.5 percent (3,099 vs 1,907).

PassMark tests show a clear pattern. Intel wins data compression (344,071 vs 316,429, 8.7 percent), extended instructions (22,002 vs 21,297, 3.3 percent), floating-point math (67,217 vs 51,588, 30.3 percent), multi-thread (27,608 vs 25,823, 6.9 percent), physics (1,525 vs 1,141, 33.7 percent), and random string sorting (35,704 vs 32,998, 8.2 percent). Intel also wins single-thread by 15.7 percent (3,926 vs 3,393). AMD counters with wins in data encryption (20,021 vs 18,485, 7.7 percent), find prime numbers (110 vs 91, 17.3 percent), and integer math (92,843 vs 87,776, 5.5 percent).

Specification Differences

The two processors diverge on several key specification fields. The Intel Core i5-12600K has 10 cores and 16 threads, compared to 8 cores and 16 threads on the AMD Ryzen 7 5800. Intel’s base clock is 3.70 GHz versus 3.40 GHz, and its boost clock is 4.90 GHz versus 4.60 GHz. The TDP difference is stark: 125 W for Intel versus 65 W for AMD. The Intel chip uses Intel Socket 1700, while the AMD chip uses AM4.

Manufacturing details differ completely. Intel is built on a 10 nm process at Intel’s foundry, with a die size of 215 mm². AMD uses a 7 nm process at TSMC, with 4,150 million transistors and a 74 mm² die. Cache allocation differs: Intel has 80 KB L1 per core, 1.25 MB L2 per core, and 20 MB shared L3; AMD has 64 KB L1 per core, 512 KB L2 per core, and 32 MB shared L3. Memory support is another differentiator: Intel supports both DDR4 and DDR5, while AMD supports only DDR4. The AMD chip lists a memory bandwidth of 51.2 GB/s; no such figure is provided for Intel.

Integrated graphics are present only on the Intel part, with UHD Graphics 770. The AMD Ryzen 7 5800 has no integrated graphics. ECC memory support is available on AMD but not Intel. The Intel i5-12600K has a launch MSRP of $289; the AMD Ryzen 7 5800 has no launch MSRP listed. The release dates differ, with Intel launching on 2021-11-03 and AMD on 2021-01-11. Both processors have unlocked multipliers for overclocking.

The Verdict

The data indicates that the Intel Core i5-12600K is the better choice for users prioritizing multi-threaded throughput and synthetic gaming benchmarks. Its 17 wins in head-to-head comparisons, including a 30.3 percent lead in floating-point math and a 33.7 percent lead in physics, demonstrate clear superiority in compute-heavy tasks. The 11.1 percent advantage in 3DMark 16-thread suggests better performance in threaded workloads that mimic gaming and rendering scenarios. The Intel chip also offers the flexibility of DDR4 and DDR5 memory support, which can be a consideration for platform longevity.

The AMD Ryzen 7 5800, however, is not without merit. Its 38.5 percent lead in Cinebench R23 single-core and 20.3 percent lead in multi-core are substantial. These results indicate that in certain rendering and content-creation workloads, the Ryzen 7 5800 can significantly outperform the Intel chip. The AMD part also wins in data encryption by 7.7 percent and in integer math by 5.5 percent, suggesting strengths in specific computational tasks. Its lower 65 W TDP makes it a more power-efficient option, and ECC memory support could appeal to users requiring error correction.

For gamers and general desktop users, the Intel Core i5-12600K appears more compelling due to its 3DMark dominance and higher PassMark multi-thread score. The integrated graphics on the Intel chip provide a fallback for systems without a discrete GPU, while the Ryzen 7 5800 requires one. For productivity users running Cinebench-based rendering or single-thread-dependent applications, the AMD Ryzen 7 5800 shows a clear edge. The near-identical average benchmark scores (0.2 percent delta) mean neither chip is a wrong choice overall, but workload-specific preferences should guide the decision. The Intel part’s higher TDP and support for newer memory standards suggest it is built for performance-first builds, while the AMD chip’s efficiency and ECC support point toward more power-conscious or stability-focused systems.